Detail of OED - marginalize

See OED entry for Marginalize

When the first edition of the Oxford English Dictionary published its entry for the word marginalize in 1905, the word had only one meaning (and that a pretty uncommon one): to make notes on something in the margin of a book. But language changes, and when the entry came to be revised in November 2002 its size expanded dramatically. This is principally because of a new sense, first evidenced as recently as 1970: 'To render or treat as marginal; to remove from the centre or mainstream; to force (an individual, minority group, etc.) to the periphery of a dominant social group; (gen.) to belittle, depreciate, discount, or dismiss.’ So successful has this meaning been, that it is now the only meaning of the word that is used. The accompanying citations reference the more recent use of this word in contexts of bullying and social discrimination, politically, and in the workplace.

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